C1C 1B4 is Canadian Postal Code located in Hillsborough Park Prince Edward Island.
| Postal Code | C1C 1B4 |
| Forward Sortation Area | C1C |
| Name | Hillsborough Park |
| Province | Prince Edward Island |
| Administrative Division | Queens County |
| City | Charlottetown |
| Timezone | (ADT) |
| Area Code(s) | 782 / 902 |